1. A real simple control is via CR of the GGTS. You can adjust the air from zero to maximun. Its not possible for a mouthpiece to do anyting like that.
2. Mis, if ego's cone let smaller amount of air via atomizer then you can see a small difference. Of course this position is fixed, you cant make adjustments.
3. The best way for air to come inside atomizer is from its bottom hole because air comes equable inside atomizer. The side hole of the atty cant do the same. But we talk about very small differences here.
4. The material of a mouthpiece plays a role but only to the taste. E.g. I dont use plastic mouthpieces, they bring a plastic taste in my mouth.
5. The total resistance of a construction is equal to its weaker point. (weaker point is the point with the bigger resistance)
6. I=V/R ( I =current, V=volt, R =resistanse)
7. Venting holes in a construction have to be around the tube and not in front because you will break your jaw or teeths if battery exploded
8. fuse is a must for all elecrical applications
9. GG needs cleaning. All mods need cleaning (the ones that allow you to do that) to allow current flow easily. Some of them need more cleaning, some less.
10. AVS is an automatic
vaping system, not a manual. It has the ability to be tranformed to a manual system when you want to bring liquid inside atty
11. AVS mouthpiece prevents liquid in mouth. It is made with stairs inside so liquid stops on those stairs, its something like a silencer as Rob said but its a silencer for liquid. That was a secret, noone knew why I made 3 kind of holes inside it.
12. The fatter walls of a construction doesnt mean that current flows more easy.
13. The material of a construction plays a role to the flow of the current.
14. If fuse on GGTS doesnt work as you want, then you can put 2 springs inside it. That means that fuse will get burned later but finally it will get burned preventing damage to
batteries, expotion or other bad situations.
15. Collector
tank almost stops the noice of a cartomizer
16. Fuse doesnt come as standard on GG because the most people will ask me too often why GG is not working.
17. Plastic caps cant adjust the voltage by screwing and unscrewing them
Those are some serious answers that I remember for now, all in one list.